Posts Tagged: Asian citrus psyllid

The public, says entomologist Kris Godfrey, needs to become more aware of the threat of invasive species.

And, she adds, we need to educate people and organizations about the incoming pests and pests that are already here.

With that in mind, she's coordinating an all-day conference, themed “Educating the Public about New Invasive Species Threatening California’s Plant Ecosystems,” set Tuesday, April 24 in the UC Davis Conference Center.

The goal? "To bring together biologists, social scientists, and communication experts to discuss how to educate all segments of society about the threat of invasive species and how to assist in their exclusion and detection,” said Godfrey, an associate project scientist with the Contained Research Facility at UC Davis.

Godfrey, formerly with the California Department of Food and Agriculture, says conference attendees will learn about developing and delivering effective and consistent messages about invasive species to a variety of audiences. They also will learn how to access the resources available to conduct effective outreach programs on invasive species.

Among the pests to be discussed: the golden spotted oak borer, Asian citrus psyllid, European grapevine moth, Japanese dodder, sudden oak death, and zebra and quagga mussels.

Some of the speakers:

"Predicting the Next Pest Invaders and How To Prevent Their Introduction," Joseph DiTomaso, UC Davis Department of Plant Sciences

More information, including the full list of speakers, is available at http://crf.ucdavis.edu. Conference registration is taking place online at https://registration.ucdavis.edu. Bin at right shows Huanglongbing (HLB) symptoms caused by Asian citrus psyllid. At left: normal fruit.(Photo by S. Halbert, Florida Department of Agriculture and Consumer Services). For additional information, contact Kris Godfrey at kegodfrey@ucdavis.edu or (530) 754 2104.

The conference, supported with a grant from the UC Davis College of Agricultural and Environmental Sciences’ 2011 Spring Programmatic Initiative, is a cooperative project of the UC Davis College of Agricultural and Environmental Sciences, the UC Davis departments of Plant Pathology, Entomology, Plant Sciences, and Food Science and Technology, the California Center for Urban Horticulture at UC Davis, the UC Statewide Integrated Pest Management Program, and the UC Riverside Department of Entomology.

A side note: take a look at the oranges below and see the damage that the Asian citrus psyllid causes. The bin on the right shows small lopsided fruit, typical of HLB infection. The bin on the left shows normal-sized fruit. These photos were taken in Florida.

Asian citrus psyllid is an invasive pest. (Photo by M. E. Rogers, University of Florida)

Asian citrus psyllid is an invasive pest. (Photo by M. E. Rogers, University of Florida)

The Geographic Information Systems (GIS) team at the Kearney Agricultural Research and Extension Center is growing this year. The program will add two positions in the coming months with new grant funding as more scientists recognize the value of employing spatial mapping in their agricultural research, said Kris Lynn-Patterson, the GIS Academic Coordinator at Kearney.

Robert Johnson, the GIS computer resource specialist at Kearney.

GIS is giving researchers and growers a whole new perspective of the land. GIS software enables users to attach landscape attributes to digital maps, which are then overlaid onto aerial photos and satellite images. With GIS and image processing, the viewer can see trends and patterns that aren’t visible from the ground.

In one of the new projects, the Kearney GIS team will work with Beth Grafton-Cardwell, a UC Riverside citrus entomology specialist and director of the UC Lindcove Research and Extension Center, to provide the spatial information necessary to better manage Asian citrus psyllid (ACP) and the possible future occurrence of Huanglongbing, a devastating citrus disease that the psyllid can spread. ACP was introduced into California in 2008; large populations are now established in urban areas of San Diego, Imperial, Los Angeles, San Bernardino and Riverside counties. Huanglongbing has not been detected in California to date. The California Department of Food and Agriculture and citrus growers are treating urban and agricultural areas of infestation to prevent ACP spread and Huanglongbing introduction.

GIS will be used to document the locations of ACP infestations and the disease, and analyze the risk and rate of spread from the urban areas into commercial citrus. The research is funded by a five-year grant from UC Agriculture and Natural Resources to conduct risk assessment, economic analysis and extension education for Asian citrus psyllid and Huanglongbing disease management in California.

Kearney GIS also secured a contract with the Citrus Research Board to map all commercial citrus orchard locations and boundaries in California.

“This will go hand in hand with the Asian citrus psyllid research,” Lynn-Patterson said. “Currently a seamless GIS map layer of this type doesn’t exist, but is badly needed to facilitate the effective use of GIS in an area-wide pest management program.”

Another source of funding for the GIS program has been Cotton Incorporated and the California Cotton Alliance for continuing work with Kearney-based UC integrated pest management advisor Pete Goodell. GIS is critical to understanding the movement of lygus bugs through the San Joaquin Valley’s diverse cropping landscapes and the relationship between crops that act as sources (places from which lygus originate) or sinks (crops into which lygus move). Throughout the year, lygus feed on various crops and weeds, and when these become unsuitable, they move into cotton, where lygus costs farmers nearly $19 million in yield loss each year.

The GIS team will build on the existing Lygus Community Mapping Program by incorporating lygus monitoring data, and delivering the program through smart mobile devices, such as 3G- and 4G-compatible cell phones and tablets.

See Kearney’s Web-based GIS website for more information on the program.